Tuesday, August 13, 2013

Typhoon UTOR (LABUYO) Update #015


for Tuesday, 13 August 2013 [8:18 PM PhT]


Issued: 6:00 PM PhT (10:00 GMT) Tuesday 13 August 2013
Next Update: 6:00 AM PhT (22:00 GMT) Wednesday 14 August 2013

Typhoon UTOR (LABUYO) has slightly intensified during the past 12 hours and continues to endanger Southern China especially Hainan Island, Leizhou Peninsula and Western Guangdong...outer rainbands approaching the shorelines of Southern China & Hainan Island.

This typhoon will continue to enhance the Southwest Monsoon (Hanging Habagat) bringing cloudy conditions with occasionally slight to moderate to sometimes heavy rains and thunderstorms across Vietnam and the Philippines (particularly the western sections) tonight. Flash floods and landslides are likely in hazard-prone areas especially along river banks and mountain slopes.

Residents and visitors along Southern China including Hainan Island and Northern Vietnam should closely monitor the development of Utor (Labuyo).

Do not use this for life or death decisions. This update is intended for additional information purposes only. Kindly refer to your national weather agency for official warnings, advisories or bulletins.


As of 5:00 pm today, the center of Typhoon Utor (Labuyo) was located over the South China Sea...about 370 km south-southwest of Hong Kong or 715 km west-northwest of Vigan City, Ilocos Sur...currently moving west-northwest with a decreased forward speed of 19 km/hr in the general direction of Southern China.

Maximum Sustained Winds (1-min. avg) have increased to near 185 km/hr near the center with higher gusts. Typhoon Force Winds (118 km/hr or more) extend outward up to 65 kilometers from the center...and Tropical Storm Force Winds (63-117 km/hr) extend outward up to 260 kilometers. A WeatherPhilippines/Meteomedia Automated Weather Station (AWS) based in Baguio City, Benguet has recorded 209.4 millimeters (mm) of rainfall in a span of 24 hours, which is considered heavy. Another Meteomedia/WeatherPhilippines Weather Station located in Baler, Aurora (LPP), recorded wind gusts of 107 km/hr blowing from the west-southwest. Utor (Labuyo) is now a large-sized tropical cyclone with a diameter of 740 kilometers across. The 24-hour rainfall accumulation near the center of Utor (Labuyo) is estimated to be heavy (325 mm).


Typhoon Utor (Labuyo) is expected to move northwestward for the next 24 hours...turning west-northwest to west on the remaining of the forecast period. On the forecast track, the core of Utor (Labuyo) will be over Western Guangdong on Wednesday afternoon. By Thursday afternoon, Utor will be moving over land across the southern part of Guangxi Province.

Utor (Labuyo) is expected to slightly weaken as it approaches Southern China. Advance Intensity Forecast (AIF) shows Utor will weaken to just 75 km/hr by Thursday afternoon.

The following is the summary of the 2-day forecast outlook and an extended 3-day forecast on this system:

WEDNESDAY AFTERNOON: Over Western Guangdong...weakens...about 45 km north of Zhanjiang, China [5PM AUGUST 14: 21.7N 110.5E @ 165kph].
THURSDAY AFTERNOON: Over the southern part of Guangxi Province...further weakens...about 290 km northwest of Zhanjiang City, China [5PM AUGUST 15: 22.9N 108.2E @ 75kph].
FRIDAY AFTERNOON: Weakens to a Tropical Depression (TD) while moving along the western part of Guangxi Province...about 235 km northwest of Mong Cai, Vietnam [5PM AUGUST 16: 23.5N 107.3E @ 55kph].

*Please be reminded that the Forecast Outlook changes every 6 hours, and the Day 2 and 3 Forecast Tracks have an average error of 100 and 250 km respectively...while the wind speed forecast error, averages 35 kph per day. Therefore, a turn to the left or right of its future track and changes in its wind speed must be anticipated from time to time.


Below is the summary of the storm's parts and its hazards affecting specific areas. You can also view this image link for you to understand the parts.

CLOUD-FILLED EYE - Over the South China Sea. Possible calm and lull conditions (with <20 kph winds) will be expected inside the eye (click here to know more about the EYE).
EYEWALL - where Typhoon Conditions with Typhoon Force Winds (>118 kph) will be expected within this wall. Affected Areas: Northwest portion of the South China Sea (click here to know more about the Eyewall).
INNER RAINBANDS - where Tropical Storm Conditions with Tropical Storm Force Winds (63-100 kph) will be expected. Affected Areas: Northwest part of the South China Sea.
OUTER RAINBANDS - where Tropical Depression Conditions with light, moderate to strong winds (30-62 kph) will be expected. Affected Areas: South China Sea and West Philippine Sea (click here to know more about Rainbands).
24HR TOTAL RAINFALL ACCUMULATION - from 5 up to 150 mm (slight to heavy rainfall) can be expected along areas affected by the outer & inner rainbands (see above)...with isolated amounts of 151 to 325 mm (heavy) along areas near the center of Utor (Labuyo).

Important Note: Please keep in mind that the above forecast outlook, effects and hazards summary changes every 6 to 12 hrs!


Time/Date:5:00 PM PhT Tue Aug 13, 2013
Class/Name: TY Utor (Labuyo)
Location of Center: 19.0º N Lat 113.8º E Lon
Distance 1: 715 km WNW of Vigan City
Distance 2: 370 km SSW of Hong Kong
Distance 3: 345 km S of Macao
Distance 4: 345 km E of Qionghai, Hainan
Distance 5: 375 km ESE of Haikou, Hainan
Distance 6: 430 km SE of Zhanjiang, China
MaxWinds (1-min avg):185 kph near the center
Peak Wind Gusts: 230 kph
Saffir-Simpson Hurricane Scale: Category 3
Present Movement: West-Northwest @ 19 kph
Towards: Southern China
24hr Rainfall Accum (near center): Heavy [325 mm]
Minimum Central Pressure: 948 millibars (hPa)
Size (in Diameter): 740 km [Large]
Max Sea Wave Height (near center): 41 ft
Possible Storm Surge Height: 9-12 ft (2.7-3.9 m)

T2K/WP StormTracks (for Public): GIF | Google Map (Flash)



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>> To know the meteorological terminologies and acronyms used on this update visit the ff:


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